I don't think they'll be stocking any pads, really. Usually in a case where the dealer is replacing a spring or a pair of them, they just transfer over whatever MB had in there. I have seen (somewhere, I think the parts dept on the parts computer) a system MB uses for determining the number of (pardon the expression) tits the pads are supposed to have. I don't know if this is useful info or not (other than the fact that MB techs use the term "tits" for those small notches). If the aftermarket manufacturer specifies NO pad, I'd still want the cushion in there. OH, MB might also have pads with "zero" tits also. The more there are the thicker they are.
Now you're going to have to figure out how to politically correctly get past the term "tits" on those pads when you're at the parts counter......
Gilly